参考文献:10.1007/s10965-010-9466-5 摘要:Cho J, Lee SM, Kim CW, Song S. Synthesis and characterization of biodegradable thermosensitive neutral and acidic poly(organophosphazene) gels bearing carboxylic acid group. Journal of Polymer Research. 2010 Jul 06;18(4):701–13. doi: 10.1007/s10965-010-9466-5.